Detection rules › Sigma
Systemd Service Creation
Detects a creation of systemd services which could be used by adversaries to execute malicious code.
Known false positives
- Admin work like legit service installs.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | |
| Privilege Escalation |
Telemetry coverage
| Platform | Record / event type |
|---|---|
| Linux | auditd PATH record: Filename path information |
Rule body
title: Systemd Service Creation
id: 1bac86ba-41aa-4f62-9d6b-405eac99b485
status: test
description: Detects a creation of systemd services which could be used by adversaries to execute malicious code.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1543.002/T1543.002.md
author: 'Pawel Mazur'
date: 2022-02-03
modified: 2022-02-06
tags:
- attack.privilege-escalation
- attack.persistence
- attack.t1543.002
logsource:
product: linux
service: auditd
detection:
path:
type: 'PATH'
nametype: 'CREATE'
name_1:
name|startswith:
- '/usr/lib/systemd/system/'
- '/etc/systemd/system/'
name_2:
name|contains: '/.config/systemd/user/'
condition: path and 1 of name_*
falsepositives:
- Admin work like legit service installs.
level: medium
Stages and Predicates
Stage 0: condition
path and 1 of name_*Stage 1: path
path:
type: 'PATH'
nametype: 'CREATE'
Stage 2: name_1
name_1:
name|startswith:
- '/usr/lib/systemd/system/'
- '/etc/systemd/system/'
Stage 3: name_2
name_2:
name|contains: '/.config/systemd/user/'
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
name | match |
| field:"name" kind:match value:"/.config/systemd/user/" |
name | starts_with |
| field:"name" kind:starts_with |
nametype | eq |
| field:"nametype" kind:eq value:"CREATE" |
type | eq |
| field:"type" kind:eq value:"PATH" |